【摘要】 由于光的衍射作用 ,使通过聚焦系统的激光束入射到特定靶面成一光斑 (主光斑 ) ,而在主光斑以外还有次级光斑圈 (旁瓣 )。为了消减旁瓣 ,结合理论分析和神光装置聚焦系统的设计 ,提出了一种新的系统孔径遮挡分割法 ,从光的衍射理论和实验证明这种方法是有效的 ,使旁瓣缩减更多还原

【Abstract】 The laser beam passing through the focusing systems gets an facula,which consists of main spot and sidelobe on the focus plane. In order to eliminate the sidelobe, a method of obstructing aperture of the focusing optical system is advanced. The experiment and the theory show that the sidelobe is reduced.更多还原